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ISO 3429:1976

Sodium fluoride primarily used for the production of aluminium — Determination of iron content — 1,10- Phenanthroline photometric method

Standard Details

Applicable to the determination of Fe contents, expressed as Fe2 O3 , of more than 0.020 % (m/m). Covers the dissolution of a test portion by alkaline fusion by means of sodium carbonate and boric acid. Dissolving of the residue with nitric acid solution and reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)-1,10-phenanthroline complex in a buffered medium at a pH between 3.5 and 4.2. Photometric measurement of the coloured complex at a wavelength of about 510 nm.

General Information

Status : Published
Standard Type: Main
Document No: ISO 3429:1976
Document Year: 1976
Pages: 4
Edition: 1
  • Section Volume:
  • ISO/TC 226. Materials for the production of primary aluminium
  • ICS:
  • 71.100.10 Materials for aluminium production

Life Cycle

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ISO 3429:1976
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